@article{CMUC_1986__27_2_a5,
     author = {Tkachuk, V. V.},
     title = {Approximation of ${\bf R}^X$ with countable subsets of $C_p(X)$ and calibers of the space $C_p (X)$},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {267--276},
     publisher = {mathdoc},
     volume = {27},
     number = {2},
     year = {1986},
     mrnumber = {857546},
     zbl = {0601.54002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1986__27_2_a5/}
}